Random FH-OFDMA system based on statistical multiplexing

Author

Jung, Bang Chul ; Sung, Dan Keun

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., KAIST, Daejeon, South Korea

Volume

3

fYear

2005

fDate

30 May-1 June 2005

Firstpage

1793

Abstract

We propose a random frequency hopping orthogonal frequency division multiple access (RFH-OFDMA) system based on statistical multiplexing for improving downlink user capacity. User capacity is defined as the maximum number of users in case that served with a basic data-rate in a cell. We compare the downlink user capacity of the proposed RFH-OFDMA system with that of the conventional frequency hopping OFDMA (FH-OFDMA) systems. User capacity is limited by either the number of subcarriers or other-cell interference (OCI). Simulation results show that the proposed RFH-OFDMA system can accommodate 262 users in a 3-sector based cell, while the conventional FH-OFDMA systems accommodate 51 users when the user channel activity is 0.1.

Keywords

OFDM modulation; channel capacity; frequency division multiple access; frequency hop communication; radio networks; statistical analysis; downlink user capacity; frequency hopping orthogonal frequency division multiple access; other-cell interference; random FH-OFDMA system; statistical multiplexing; Capacity planning; Data communication; Downlink; Frequency conversion; Frequency division multiplexing; Interference; Modulation coding; OFDM; Scheduling; Traffic control;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2005. VTC 2005-Spring. 2005 IEEE 61st

ISSN

1550-2252

Print_ISBN

0-7803-8887-9

Type

conf

DOI

10.1109/VETECS.2005.1543630

Filename

1543630